DVR manual.working version1 CANNON® Digital Vacuum Regulator Instruction & Operation Manual Version 1.3 — May, 2009; CANNON® Instrument Company 2139 High Tech Road • State College,

Instruction & Operation Manual

P/N 41.2990

DVRDigital Vacuum Regulator

i Contents | Cannon Instrument Company®

Copyright Copyright ©2021 CANNON Instrument Company®. All rights reserved.

Trademarks CANNON® and the CANNON® logo are registered trademarks of Cannon Instrument Company®.

Meriam® is a registered trademark of Meriam®

Contact Address: CANNON Instrument Company®

2139 High Tech Road State College PA 16803, USA

Phone: 1-814-353-8000; 1-800-676-6232

Fax: 1-814-353-8007

Website: www.cannoninstrument.com

Email: Sales: [email protected] Service: [email protected]

Manual P/N 41.2990

http://www.cannoninstrument.com/mailto:[email protected]:[email protected]

Cannon Instrument Company® | Contents i

Contents Contents ............................................................................................................................ i

Safety Precautions ............................................................................................................ iv Notes/Cautions/Warnings ............................................................................................................. v

DVR Overview ................................................................................................................... 1 DVR Function ................................................................................................................................ 1 DVR Application ............................................................................................................................ 1

DVR-1000 vs. DVR-1500 ............................................................................................................ 2 Configuration Options ............................................................................................................... 2

Specifications .................................................................................................................... 3

Tubing Connections ........................................................................................................... 4 DVR-1000 Connections ................................................................................................................. 4

Connect to your Application ...................................................................................................... 4 DVR-1500 Connections ................................................................................................................. 5 Vacuum Trap ................................................................................................................................. 5 Electrical Connections ................................................................................................................... 5

Connecting Power Cable ........................................................................................................... 6

DVR Operation .................................................................................................................. 7 Default Settings ............................................................................................................................ 7

Accessories ............................................................................................................................... 7 Turning ON the DVR ..................................................................................................................... 7 Meter Display/Key Control Options ............................................................................................... 8

Adjusting the Flow Rate ............................................................................................................ 8 Bleeding Vacuum ...................................................................................................................... 9

Adjusting Offset ............................................................................................................................ 9 Adjust HI/LO Set Points ............................................................................................................... 10

ALAr ........................................................................................................................................ 10 Selecting Set Point Values .......................................................................................................... 11

DVR Cleaning & Maintenance ........................................................................................... 12 Cleaning ...................................................................................................................................... 12 Maintenance ............................................................................................................................... 12 Troubleshooting the DVR ............................................................................................................ 12

Vacuum System Leak .............................................................................................................. 12

Altering Factory Settings .................................................................................................. 13 Changing the Engineering Unit of Measure ................................................................................. 13

Changing Engineering Units .................................................................................................... 13

ii | DVR Operation Manual

Adjusting Control Set Points ................................................................................................... 13 Adjustment Procedure: Adjusting the Control Set Points (SET 1 and SET 2) ........................... 14

Selecting Set Point Values .......................................................................................................... 15

Replacement Parts........................................................................................................... 16

Warranty ........................................................................................................................ 17 Products Limited Warranty ......................................................................................................... 17 Reagent and Chemical Warranty ................................................................................................. 17 Returning a Product to CANNON ................................................................................................ 17

Required Information .............................................................................................................. 18 Hazardous Materials ............................................................................................................... 18 Shipping Notification .............................................................................................................. 18

Appendix A – Calibrating the SETRA Gauge ....................................................................... 19 Calibration Options ..................................................................................................................... 19

Calibration Procedure ............................................................................................................. 19 Removing the Differential Gauge from the DVR...................................................................... 19

Reassembling the DVR ................................................................................................................ 20

Appendix B - Calibrating the Meriam Gauge ....................................................................... 21 Front Panel Lockout .................................................................................................................... 21

Determining Lockout Status ................................................................................................... 21 Engaging Front Panel Lockout ................................................................................................ 21 Disabling Lockout ................................................................................................................... 22 Changing the Lockout Code .................................................................................................... 23

Calibration Options ..................................................................................................................... 23 Zeroing the Gauge .................................................................................................................. 24

Removing the Differential Gauge from the DVR.......................................................................... 24 Reassembling the DVR ............................................................................................................ 25

Gauge Display Errors ................................................................................................................... 25 Setting User Units ....................................................................................................................... 26

Procedure ............................................................................................................................... 27

List of Figures Figure 1: DVR with CT-1000 Constant Temperature Bath ................................................................. 1 Figure 2: CANNON DVR in Horizontal & Vertical Positions ............................................................... 2 Figure 3: NPT Port Connection .......................................................................................................... 4 Figure 4: DVR Front Panel Connections ............................................................................................ 4 Figure 5: 3VM Vacuum Manifold ....................................................................................................... 7 Figure 6: RUN Position on DVR Front Panel ...................................................................................... 8 Figure 7: OFFSET Keys ...................................................................................................................... 9 Figure 8: HOLD/mode Key ................................................................................................................ 9

Cannon Instrument Company® | Contents iii

Figure 9: SCAN/adj Key ................................................................................................................... 10 Figure 10: SCAN/adj Key ................................................................................................................. 10 Figure 11: HOLD/mode Key ............................................................................................................. 10 Figure 12: Meriam Display ............................................................................................................... 21 Figure 13: Meriam Display with Vacuum ......................................................................................... 26

List of Tables Table 1: DVR Specifications .............................................................................................................. 3 Table 2: Engineering Units .............................................................................................................. 13 Table 3: DVR Replacement Parts ..................................................................................................... 16 Table 4: Gauge Display Errors ......................................................................................................... 25 Table 5: User Units .......................................................................................................................... 26

iv | DVR Operation Manual

Safety Precautions Always observe these signs and instructions. Observe cautionary messages and warnings in order to protect yourself and prevent others from physical injury or property damage.

CANNON advises turning OFF the vacuum source when changing DVR meter settings. For the DVR-1000, it is necessary to disconnect the connection to the in-house vacuum source or turn the vacuum off. For the DVR-1500 unit, which includes a built-in vacuum pump, the vacuum can be shut off by switching the DVR front panel switch to the METER position. Turning off the vacuum prevents vacuum from building up while altering the meter gauge settings.

• Only qualified personnel should operate DVR.

• Read and understand all operating instructions and safety precautions listed in this manual before installing or operating the instrument. Contact Cannon Instrument Company with questions regarding instrument operation or documentation.

• Do not deviate from the installation, operation, or maintenance procedures described in this manual. Improper use of the DVR may result in a hazardous situation and may void the manufacturer’s warranty.

• Handle and transport the unit with care. Sudden jolts or impacts may cause damage to components.

• Position the instrument on a sturdy table or workbench.

• Provide at least 15 cm (6”) of ventilation space for the rear of the unit.

• Do not turn the power switch on and off rapidly and repeatedly.

• Observe all warning labels. Never remove warning labels.

• Never operate damaged or leaking equipment.

• Unless procedures specify otherwise, always turn off the unit and disconnect the MAINS cable from the power source before performing service or maintenance procedures, accessing the electronics drawer, or before moving the unit.

• Never operate the equipment with damaged MAINS power cables.

• Refer all service and repairs to qualified personnel.

Warning: Always ensure the protective ground (earth) terminals of the instrument connect to a protective conductor of the MAINS power cord. Use only the manufacturer-supplied power cord, and do not use an extension cord without protective grounding.

Cannon Instrument Company® | Safety Precautions v

Notes/Cautions/Warnings Keep this manual near the instrument to easily access necessary information while operating or preparing CMRV measurement.

Notes, cautions, and warnings are used in the manual to call an operator’s attention to important details prior to performing a procedure or step. Read and follow these important instructions. Failure to observe these instructions may void warranties, compromise operator safety, and/or result in damage to the instrument.

Notes provide more information about the content that follows.

Cautions alert the operator to conditions that may damage equipment.

Warnings alert the operator to conditions that may cause injury.

It is prohibited to copy or reproduce in part or in whole this manual without authorization by copyright.

If any part in this manual is not clear to understand or is missing articles, contact your local dealer or sales representative.

Manufacturer is not liable for any loss or damage directly or indirectly caused by use of the instrument or its consequences.

This manual pertains directly to the DVR Digital Vacuum Regulator. For details relating to other accessories or equipment, please refer to the appropriate manufacturer-supplied documentation.

vi | DVR Operation Manual

1 | DVR Operation Manual

DVR Overview This manual provides the necessary information for proper installation, operation, and maintenance of the CANNON DVR 1000 Series Digital Vacuum Regulator.

DVR Function The CANNON DVR 1000 Series instrument is designed to regulate vacuum at 300 mm Hg below atmospheric pressure. Vacuum may be adjusted to other settings, from 28 mm Hg to 411 mm Hg. The DVR is suitable for use with all CANNON temperature baths, including the CT and TE Series high and low temperature baths.

Figure 1: DVR with CT-1000 Constant Temperature Bath

DVR Application The DVR is ideal for use with the Cannon-Manning calibrated CMVC series viscometers, the Modified Koppers Calibrated MKVC Series viscometers, and the Asphalt Institute Vacuum Calibrated AIVC series C Series viscometers, and the Asphalt Institute Vacuum Calibrated AIVC series viscometers for measurement of highly viscous materials such as asphalt cement at 60 °C (140 °F) per ASTM D2171 specifications. Both the Cannon-Manning and the Modified Koppers permit viscosity measurement from


42 to 200,000 poise. The Asphalt Institute AIVC Series 400R and 800R viscometers, also available from CANNON, extend that range to 1,400,000 poise and 5,800,000 poise, respectively.

The DVR is also useful in other laboratory systems where accurate measurement and control of vacuum from 28 to 330 mm Hg below atmospheric pressure is required.

DVR-1000 vs. DVR-1500 The DVR-1000 is designed to regulate a laboratory’s in-house vacuum system.

The DVR-1500 includes an internal vacuum pump and does not require in-house vacuum.

Configuration Options The DVR is available from CANNON in both horizontal and vertical configurations. With its sturdy steel construction, the horizontal DVR unit is able to support any CANNON CT or TE Series temperature bath. The vertical or horizontal configuration offers convenience in locations where workspace is at a premium.

Figure 2: CANNON DVR in Horizontal & Vertical Positions

Cannon Instrument Company® | Specifications 3

Specifications Table 1: DVR Specifications

Specifications Details

Model DVR-1000 and DVR-1500 Digital Vacuum Regulator

Methodology ASTM D2171

Applications Common applications include asphalt cement and asphalt binders, with an operational range of 28 mm Hg to 410 mm Hg below atmospheric pressure

Dimensions (W × D × H) Horizontal: 47 cm × 45.8 cm × 17.2 cm (18.5 in × 18 in × 6.75 in) Vertical: 17.2 cm × 45.8 cm × 17.2 cm

(6.75 in × 18.5 in × 18 in)

Weight 20 kg (45 lb)

Shipping Weight 29.5 kg (65 lb)

Vacuum Range & Accuracy 28 mm Hg to 410 mm Hg below atmospheric pressure ± 0.5 mm Hg* NIST certified and traceable *comes preset to 300 mm Hg below atmospheric pressure

Maximum Vacuum (if user-supplied)

560 ± 50 mm Hg below atmospheric pressure

Minimum Vacuum (if user-supplied)

320 ± 50 mm Hg below atmospheric pressure

Safety Limit 746 mm Hg below atmospheric pressure

Operating Conditions 15 °C to 30 °C, 10% to 75% relative humidity (non-condensing), Installation Category II, Pollution Degree 2

Electrical Specifications 110 VAC, 50/60 Hz; 115 VAC, 50/60 Hz; 230 VAC, 50/60 Hz 400 W power consumption (unit) 1100 W power consumption (AWHE)

Compliance CE Mark: EMC Directive (2004/108/EC); Low Voltage Directive (2006/95/EC); HI-POT (1900 VDC, 60 sec.); ROHS


Tubing Connections Tubing connections for the DVR vary depending on the specific model. Follow the instructions appropriate for your unit. Make sure that there is adequate slack in the tubing to avoid kinks in the line, which prevents optimal control.

DVR-1000 Connections Ensure that the vacuum source meets the specifications listed in the Specifications section (a vacuum regulator may be required). To connect the DVR-1000 to your in-house vacuum, secure the tubing to the 1/8” NPT PORT connection on the DVR rear panel using an appropriate fitting (not supplied). Refer to Figure 3.

Figure 3: NPT Port Connection

Connect to your Application Connect the DVR-1000 to your vacuum manifold or application using the 4' length of ¼“ x 5/8" O.D. rubber vacuum tubing provided by CANNON. Secure the tubing to the Vacuum Manifold Inlet on the front panel of the DVR. Refer to Figure 4. Push the tubing firmly into place over the barbed nipple fitting. Attach the other end of the tube to your manifold/application, clamping the connection if necessary.

Check all vacuum connections to make sure they are secure.

Figure 4: DVR Front Panel Connections

Cannon Instrument Company® | Tubing Connections 5

DVR-1500 Connections The DVR-1500, although it has its own internal vacuum pump, uses the identical front panel connection as shown in Figure 4. Connect the DVR-1500 to your vacuum manifold or application using the 4' length of ¼” x 5/8" O.D. rubber vacuum tubing provided by CANNON. Secure the tubing to the Vacuum Manifold Inlet on the front panel of the DVR. Push the tubing firmly into place over the barbed nipple fitting. Attach the other end of the tube to your manifold/application, clamping the connection if necessary.

Check the vacuum connections to make sure they are secure.

The PORT connection on the rear of the DRV-1500 (see Figure 3) is an exhaust port for the vacuum. On this model, use the CANNON-supplied muffler to seal the port. Screw the muffler onto the PORT connection, and finger-tighten the muffler.

Vacuum Trap The glass bottle vacuum trap at the front of the DVR is designed to prevent liquids from being pulled into the system and damaging the internal components. The trap can only “catch” about two ounces of fluid; it is not suitable for use as a reservoir or waste receptacle. In the event that a small amount of fluid does enter the vacuum system, immediately power OFF the unit and empty the glass bottle. You may also wish to clean the 10’ rubber tubing with appropriate solvent(s). Thoroughly dry the tubing before reconnecting it to the DVR.

Electrical Connections After vacuum tubing is successfully connected, use the MAINS power cord provided with the DVR to supply electricity to the unit.

The ~MAINS symbol indicates instructions or connections for the AC power supply. The AC Power input must match the electrical specifications listed on the label on the rear panel of the instrument. The supplied AC MAINS power cord must attach to the connector labelled ~MAINS. This connection serves as a means of disconnect and should be readily accessible.

Caution: Avoid pulling liquid solvent past the vacuum trap as this may cause internal damage to DVR components and create a safety hazard.

Caution: When supplying power to the instrument, connect the protective ground (earth) terminals of the instrument to the protective conductor of the CANNON-supplied MAINS power cord. The main plug for the power cord should only be inserted in a socket outlet or receptacle provided with a protective ground (earth) contact. Do NOT use an extension cord/power cable without a protective conductor (grounding).


The (O) symbol indicates the OFF position for the electrical switches for the unit (AC Mains or accessories).

Connecting Power Cable

Make sure that the 3-position switch on the front panel is set to the center STANDBY position. 1.

Plug the power cord into the DVR rear panel IEC Power Inlet connector. 2.

Plug the other end of the cord into an appropriate electrical outlet. 3.

Cannon Instrument Company® | DVR Operation 7

DVR Operation Default Settings The DVR is designed to display and regulate vacuum for viscometry applications per ASTM D2171 specifications. The DVR regulates vacuum using points preset at CANNON for efficient regulation of vacuum at 300 mm Hg below atmospheric pressure.

To adjust the control settings to regulate at other pressures, refer to section Adjust HI/LO Set Points.

Accessories TheThe DVR is designed for use in conjunction with the CANNON 3VM and 4VM vacuum manifolds. The 3VM manifold (part number 9726-V10) has three valves and pairs with the CANNON CT-500 Series Constant Temperature Bath. The 4VM manifold (part number 9726-V05) has four valves and pairs with the CANNON CT-1000 Series and CT-2000 Series Constant Temperature Baths.

Figure 5: 3VM Vacuum Manifold

Turning ON the DVR

Make sure the instrument power cord is connected to an appropriate power source. Electrical 1.requirements are specified on the rear panel of the DVR unit.

Ensure that all vacuum connections are secure. 2.

Toggle the POWER switch on the DVR front panel to the RUN position (see Figure 6). The gauge LCD 3.is activated and the solenoid valves “click” open. On DVR-1500 models, the internal vacuum pump engages.


Figure 6: RUN Position on DVR Front Panel

Meter Display/Key Control Options

Adjusting the Flow Rate

Solenoid Regulators The DVR’s vacuum is regulated by two solenoid valves mounted inside the unit. The valves operate in tandem to maintain consistent vacuum at the desired setting. CANNON creates preset control set points for the solenoid valves to regulate vacuum at 300 mm Hg below atmospheric pressure. If it is necessary to adjust these settings, see section Altering Factory Settings.

Rate Adjust Knob Solenoid valve efficiency is influenced by the rate of flow in the DVR vacuum/pressure valve system. The flow rate is regulated with an internal needle valve. This valve is manually adjusted on the DVR front panel using the RATE ADJUST knob.

Recovery/Overshoot The flow rate also affects the recovery time (the amount of time required to restore desired vacuum settings when a significant change has occurred) and the amount of overshoot (the degree of vacuum change in excess of the desired reading observed before the vacuum stabilizes at the desired setting).

Using the RATE ADJUST Knob Set the RATE ADJUST knob so that the instrument attains the desired setting as quickly as possible without overshooting the control target by more than 0.5 mm Hg. Turn the knob clockwise to decrease the flow rate, or counterclockwise to increase the flow rate.

Limiting Overshoot For example, if you are controlling at 300 mm Hg, increase the flow rate until the overshoot produces a gauge reading greater than 300.5 mm Hg. Then reduce the flow rate until the overshoot drops to less than 0.5 mm Hg. Check the new setting by opening and closing switches on the vacuum manifold, causing a drop in vacuum. Then observe the recovery time and overshoot.


Caution: It is impossible to completely close the needle valve controlled by the RATE ADJUST knob. Do not try to force the valve closed using to the RATE ADJUST knob, or damage may occur to the valve components.

Note: For the needle valve to function efficiently, the solenoid SET 2 value must be higher than the solenoid SET 1 value (see Chapter 5)XXXX

Bleeding Vacuum If the DVR instrument will not be used for a while, toggle the front panel switch to the center STANDBY position. This action disengages solenoid operation for both models and turns off the DVR-1500 vacuum pump.

CANNON advises users bleed off residual DVR system vacuum to 250 mm or lower when the instrument is in the center STANDBY position. This prevents the unit from overshooting the target vacuum (default 300 mm Hg) when the toggle switch is returned to the RUN position.

Adjusting Offset The OFFSET command allows the user to adjust the reading relative to a known value. To set the OFFSET, follow the procedure outlined below.

Press and hold the SCAN/adj and HOLD/mode keys for eight seconds, then release. The display 1.alternates between cal and noYes for ten seconds. Refer to Figure 7.

Figure 7: OFFSET Keys

To specify yes and select CH1, press and hold the HOLD/mode key to display CH1. 2.

Press the HOLD/mode key to display ALAr. Refer to Figure 8. 3.

Figure 8: HOLD/mode Key


Press the SCAN/adj key to display OFFST. Refer to Figure 9. 4.

Figure 9: SCAN/adj Key

Press the HOLD/mode key to display the number 0. 5.

Set the desired value for the meter to display at the presently applied pressure. 6.

a. Press the SCAN/adj key to move the numbers up (+).

b. Press the HOLD/mode key to move the numbers down (-).

c. Upon reaching the desired number, press the SCAN/adj and HOLD/mode keys at the same time. The number flashes repeatedly. Then, press the SCAN/adj key to readjust the number or the HOLD/mode key to accept it. After the number is accepted, the meter will display BUSY for 10 seconds, and then resume normal operation.

Adjust HI/LO Set Points

Note: The HI/LO Set Points are used as control set points.

ALAr The ALAr command allows you to set high and low pressure alarm points. The HI or LO indicator light is lit if the applied pressure exceeds the set values. The alarm output signals are available at the terminal strip. To set the HI and LO, use the following procedure outlined below.

Press and hold the SCAN/adj and HOLD/mode keys for eight seconds, then release; the display then 1.alternates between cal and noYes for ten seconds.

Figure 10: SCAN/adj Key

To specify yes and select CH1, press and hold the HOLD/mode key to display CH1. 2.

Figure 11: HOLD/mode Key


Press the HOLD/mode key to display ALAr. 3.

Press the HOLD/mode key to display the present value of the Low Alarm point. 4.

Set the LO ALARM Point. The decimal point that was set during calibration (CAL_U, CAL_C) will 5.display.

a. Press the SCAN/adj key to move the numbers up (+).

b. Press the HOLD/mode key to move the numbers down (-).

c. Upon reaching the desired number, press the SCAN/adj and HOLD/mode keys at the same time. The number then flashes repeatedly. Then, press the SCAN/adj key to readjust the number, or the HOLD/mode key to accept it.

Repeat the same procedure as in Step 5 to set the HI ALARM Point. After the number is accepted 6.the DATUM 2000 control panel resumes normal operation.

Selecting Set Point Values Control set points for the DVR have been determined empirically. Selecting new set points to control at a different level of vacuum or at a different unit of measurement, involves some trial and error.

Once your control point (desired vacuum setting) is known, you must select and test new set points. Normal factory set points may provide a useful reference. The unit is shipped from CANNON with a value of 292.5 mm Hg for LO and a value of 299.6 mm Hg for HI. These settings allow the DVR to control at 300 mm Hg ± the tolerance factor of 0.5 mm Hg.

Mechanically, the DVR is plumbed so that the solenoid controlled by the Lo register allows air to bypass the Rate Adjust valve. This feature makes it possible to achieve a vacuum very close to the desired value in a very short time. For the HI solenoid, the vacuum source routs through the Rate Adjust valve, permitting a finer adjustment. For accurate control, both set points and the Rate Adjust valve must be set properly.

Remember that the Rate Adjust valve setting varies depending on the values chosen for the solenoid set points. When resetting the control points, ensure you also check/adjust the Rate Adjust knob.


DVR Cleaning & Maintenance Cleaning

Caution: Before cleaning the DVR, turn off the instrument and unplug the MAINS power cord. Do NOT clean the instrument while it is in operation.

Best practices dictate that it is ideal to periodically clean the outside of the unit with a cloth moistened with water and/or a mild detergent solution. Do not allow water or detergent solution to drip into the unit electrical drawer. Wipe down the front panel, sides and top. Remove the vacuum trap jar and wipe out the vacuum trap enclosure and the glass jar. If there is oil or residue in the glass jar, use an appropriate solvent and drying agent to clean the jar. Reattach the jar after cleaning. The unit is inoperable unless the vacuum trap is in place.

Maintenance Do not allow oil to accumulate in the vacuum trap. Remove the jar, empty and clean as often as necessary. Remove MAINS power from the instrument BEFORE removing the vacuum trap.

Periodically inspect the line cord for fraying and/or exposed wiring. When removing the cord from the power outlet, pull it out by the plug. Do not pull the cord.

Troubleshooting the DVR Upon discovery of a problem with the DVR, first make sure that all tubing and electrical connections are correct and secure, and that the power switch is in the correct ON position.

Vacuum System Leak If the vacuum system is leaking, check the vacuum trap jar to ensure it is tightly screwed into position, with the cork seal making contact with the lip of all sides of the jar.


Altering Factory Settings The Meriam gauge installed on the DVR unit offers several programmable registers for adjusting the operating parameters of the instrument. For a full description of programming options, consult the Meriam manual included with your DVR instrument.

Changing the Engineering Unit of Measure The LCD provides nine options for units of measurement. Select the desired unit as shown in Table 3.

Table 2: Engineering Units

Display Unit of Measure mm HG Millimeters of mercury in H2o Inches H2o psi Pounds per square inch Kg/cm3 Kilograms per square centimeter kPa Kilopascals mbar Millibars bar Bars cmH2o Centimeters H2o In Hg Inches of mercury None* User units

*The LCD does not display an engineering unit when operating with User Units. See section Altering Factory Settings for instructions on defining User Units.

Changing Engineering Units

To change engineering units when front panel lockout is not enabled (no password necessary) press 1.the UP (ENG UNITS) key when the gauge is in Measurement mode. The current engineering unit begins flashing.

Press the UP/DOWN arrow keys until the desired engineering unit is flashing. 2.

Press the PRGM key. The gauge then returns to Measurement mode with the new unit of measure. 3.The set point measurement values in the P registers automatically reset to display and function using the selected engineering units.

Adjusting Control Set Points To adjust the control set points, set the P5 register to correspond to your desired set point selection. Then change the numeric values for each set point. The decimal point location for each set point is determined after the numeric value is set.


Adjustment Procedure: Adjusting the Control Set Points (SET 1 and SET 2)

Make certain the gauge is in the measurement mode displaying the current vacuum/pressure 1.reading.

Turn the DVR front panel switch to the METER setting. 2.

Press the PRGM key. The gauge displays the P0 register indicator. 3.

Use the UP/DOWN arrow keys to scroll though the register options until you get to the P5 register. 4.

When the gauge LCD displays P5, press the PRGM key again to display the current register setting. 5.

Use the UP/DOWN arrow keys to scroll through the P5 program options until the desired setting (3, 6.if both set points are desired) is displayed. Then press the PRGM key.

a. Select 0 to disable control for both set points

b. Select 1 to enable Set Point 1 only (P6 register)

c. Select 2 to enable Set Point 2 only (P7 register)

d. Select 3 to enable Set Points 1 & 2 (P6 & P7 registers)

Use the UP/DOWN arrow keys to scroll through the register options until the P6 register is 7.displayed.

Press the PRGM key to display the current setting for the set point. Note that the left-most digit is 8.flashing.

Use the UP/DOWN arrow keys to change the flashing digit to the desired value. Then press PRGM 9.again. The next numeral begins flashing.

Repeat step 9 until all numeric values are reset and the decimal point is flashing. 10.

Press the UP/DOWN keys to relocate the decimal point until the desired value for the set point is 11.displayed on the LCD.

Press PRGM to save the new value to the register. The LCD displays the P register. 12.

Note: During any programming operation, if there is no keypad activity for approximately one minute then the current programming operation aborts and the gauge returns to the Measurement mode.

Note: If lockout is enabled, the instrument prompts the user to enter the lockout code. See Front Panel Lockout for more information.

Cannon Instrument Company® | Altering Factory Settings 15

Press the UP key to display the P7 register. 13.

Repeat steps 8 through 12 to adjust the P7 set point value. 14.

When both set points are correctly set, press the ON/OFF key to return to the measurement mode. 15.

Selecting Set Point Values Control set points for the DVR have been determined empirically. Selecting new set points to control at a different level of vacuum or at a different unit of measurement will involve some trial and error.

Once your control point (the desired vacuum setting) is known, select and test new set points. Normal factory set points may provide a useful reference. The unit ships from CANNON with a value of 292.5 mm Hg for SET1 and a value of 299.6 mm Hg for SET2. These settings allow the DVR to control at 300 mm Hg ± the tolerance factor of 0.5 mm Hg.

Mechanically, the DVR is plumbed so that that solenoid controlled by the SET1 register allows air to bypass the Rate Adjust valve. This feature makes it possible to achieve a vacuum very close to the desired value in a very short time. For the SET2 solenoid, the vacuum source is routed through the Rate Adjust valve, permitting a finer adjustment. For accurate control, both set points and the Rate Adjust valve must be set properly.

The Rate Adjust valve setting varies depending on the values chosen for the solenoid set points. When resetting the control points, also check/adjust the Rate Adjust knob.


Replacement Parts Replacement parts are available from CANNON Instrument Company. Identify the part number below when ordering DVR replacement parts Check serial cable connections.

Table 3: DVR Replacement Parts

Part Number Description 41.2013 Solenoid Valve #2, 1/16” orifice 41.2014 Solenoid Valve #2, 3/32” orifice 41.2023 Fuse, ¼” x 1- ¼” 2A 250V MDL 41.2057 100/115 Volt Vacuum Pump 41.2058 220/240 Volt Vacuum Pump 41.39 Exhaust muffler 42.9 Tubing, 5/16 i.d. x 1/8 Neoprene 61.217 Vacuum trap, ¾ oz jar, 1/8” NPT 74.2110* Power cord, UA IEC320

*international customers please contact your local CANNON representative for the equivalent part number

Direct requests for other required parts to CANNON customer service department at 814-353-8000 or [email protected].

Cannon Instrument Company® | Warranty 17

Warranty Products Limited Warranty In addition to other manufacturers’ warranties, Cannon Instrument Company (“the Company”) warrants all products (other than reagents and chemicals) delivered to and retained by their original purchasers to be free from defect in material and workmanship for one year from the date of the Company’s invoice to the purchaser. For a period of one year from the date of such invoice, the Company will correct, either by repair or replacement at the Company’s sole discretion, any defect in material or workmanship (not including defects due to misuse, abuse, abnormal conditions or operation, accident or acts of God, or to service or modification of the product without prior authorization of the Company) without charge for parts and labor. The determination of whether any product has been subject to misuse or abuse will be made solely by the Company.

The Company shall not be liable for any special, incidental, or consequential damages, or any damage to plant, personnel, equipment or products, directly or indirectly resulting from the use or misuse of any product. Representations and warranties made by any person, including dealers and representatives of the Company, which are inconsistent, in conflict with, or in excess of the terms of this warranty shall not be binding upon the Company unless placed in writing and approved by an officer of the Company.

Reagent and Chemical Warranty Cannon Instrument Company (“the Company”) warrants all reagents and chemicals sold by the Company and delivered to and retained by their original purchasers to conform to the weight, specifications and standards stated on the package. The Company will, at its sole option, either replace or refund the price (net of freight, handling charges and taxes), of any reagent or chemical sold by the Company which does not conform to such weight, specifications and standards upon the prompt return of the unused portion. Except for replacement or refund of the net price, the Company shall not be liable for any damages occurring as a consequence of the failure of any reagent or chemical sold by the Company to conform to the weight, specifications and standards stated on the package.

Returning a Product to CANNON Before returning a CANNON product for repair or service, make every attempt to identify the problem. If, after careful checking, the problem remains unidentified or unsolved, telephone CANNON Instrument Company (or the local service agent) to consult with a product specialist. If the specialist cannot recommend a simple solution or repair, CANNON will authorize the return of the product through the issuance of a Return Authorization number (RA).

CANNON Telephone Number 814-353-8000

CANNON Fax Number 814-353-8007

Products returned to CANNON must be carefully packed. Ship prepaid to the following address:


CANNON Instrument Company

ATTN: Return Authorization # __________

2139 High Tech Road

State College, PA 16803 USA

Please include the following:

Required Information

• The Return Authorization number (RA).

• The name and telephone number of the person at your company to contact regarding the product.

• Shipping and billing instructions for the return of the product to your location.

• A detailed explanation of the reason for the return. If the product is not covered by warranty, the customer will be provided with an estimate of the repair costs and asked for approval before any repairs are made. The customer will be required to issue a purchase order for the cost of the repairs.

Hazardous Materials Please contact CANNON before returning a product that could possibly contain hazardous material.

Shipping Notification Products returned without CANNON’s prior authorization will not be accepted. The customer may be billed a testing fee if a product is returned to CANNON and found to be working properly.

Cannon Instrument Company® | Appendix A – Calibrating the SETRA Gauge 19

Appendix A – Calibrating the SETRA Gauge Calibration Options A primary concern with any digital manometer is calibration. There are numerous NIST-traceable vacuum calibrators and dead weight testers on the market that are suitable to check the DVR’s calibration. When choosing a reference, ensure the accuracy of the calibration unit is superior to the accuracy of the SETRA gauge.

Calibration Procedure

Attach the selected measuring device to the Vacuum Manifold Inlet port on the front panel with 1.appropriate tubing. Clamp if necessary.

Turn on the DVR and allow it to regulate vacuum at 300 ± 0.5 mm Hg, or to the target selected. 2.

While the DVR is controlling the amount of vacuum in the system, compare the reading on the 3.DVR’s LCD screen to that of the calibrated reference.

Check the display readings several times while the DVR display is relatively steady. If there is a 4.difference greater than 0.06% of full scale between the instruments (in this case that would be ± 0.2 mm Hg) the differential gauge is out of calibration. Contact CANNON Instrument Company for assistance.

Removing the Differential Gauge from the DVR If it is necessary to repair or replace the SETRA differential gauge, it may be possible to do so without returning the DVR instrument to CANNON. To remove the gauge from the DVR, follow the instructions outlined below.

Turn off power to the DVR and unplug the MAINS power cord from the DVR unit. 1.

For DVR-1000 units, remove the in-house vacuum connection from the port on the rear panel of the 2.DVR.

Allow the system to equilibrate to atmospheric conditions. 3.

Note: Both instruments must use the same unit of measurement.

Note: At this point,in order to access the inner drawer, it may be necessary to relocate the DVR unit. There must be adequate room to access the rear panel and enough space in front of the unit (2 feet) to slide the inner drawer unit out.


Use a screwdriver to unscrew the three ‘captive’ set screws on the lower rear panel of the DVR. 4.

Slide the inner drawer straight out by pulling smoothly on the two handles on the front panel. 5.

Place the inner drawer unit on a workbench, facing the rear of the drawer. 6.

Gently pull out the 4 pin 24 Vdc power supply connector. 7.

Gently pull out the 5 pin connector from the solenoid valve switching board. 8.

Lift the wires from the gray wire channel mounted to the bottom panel. 9.

Using a 7/16”wrench, remove the Poly-Flo® tubing fitting from the straight fitting on the ‘low’ side 10.of the differential gauge.

Use a screwdriver to unscrew the four screws (two on each side) holding the front panel. 11.

Use a 5/16 nut driver to remove the nut from the back of the front panel. 12.

Lower the front panel for easy access to the gauge. 13.

Remove the four panel mount tabs to complete the procedure. Retain the four panel mount tabs 14.and all screws for future reassemble.

Contact CANNON Instrument Company (or your local CANNON representative) for calibration 15.information, and to receive a Return Authorization (RA) number. The digital differential gauge must be recalibrated by the manufacturer. Failure to do so will invalidate the certification and may damage the unit.

The Customer Service Department will assign you a Return Authorization number. The digital differential gauge is sensitive to jarring and shock. After issuing an RA number, CANNON ships the appropriate packing materials for your gauge. Use these materials to ship your gauge to CANNON Instrument Company. Refer to the Warranty section.

When returning your gauge, include the following information:

• The Return Authorization number.

• The name and telephone number of the person in your company to contact regarding the gauge.

• Shipping and billing instructions for the return of the gauge to your location.

Reassembling the DVR Reverse the previous steps to reassemble the unit.

Note: Be careful not to kink the Poly-Flo® tubing or strain any of the tubing connections during this procedure.

Cannon Instrument Company® | Appendix B - Calibrating the Meriam Gauge 21

Appendix B - Calibrating the Meriam Gauge

Figure 12: Meriam Display

Front Panel Lockout The front panel lockout is a useful option for the digital gauge. The lockout limits access to the program registers that are affecting operation of the gauge. With multiple DVR users, the lockout function is used to prevent alteration of those set values. Set the lockout by programming a code number between 01 and 99 into the P0 register.

You may encounter the lockout when trying to edit control features or enter the Program (PRGM) mode.

Determining Lockout Status To determine if lockout is disabled, turn the switch on the DVR front panel to the meter position and wait until the DVR is reading normally in the Measurement (default) mode. Then press the PRGM key.

One of two things will happen:

If the lockout is disabled, then the PRGM indicator appears at the top of the LCD screen and the P0 register displays. At this point, you may proceed to alter register values per manual instructions.

If the lockout is enabled, the PRGM indicator appears at the top of the LCD screen but instead of P0, the LCD screen displays the L lockout indicator and a 00 display.

Engaging Front Panel Lockout To engage front panel lockout, change the lockout code from the default 00 (lockout disabled) to any value between 01 and 99.


Lockout Procedure

While the gauge is in the Measurement mode, press the PRGM key. The P0 register then displays. 1.

Press PRGM again to access the lockout set screen. 2.

Use the UP/DOWN keys to change the value of the flashing digit. When the desired value displays, 3.press PRGM to select it.

To reset the first digit of the lockout code at this point, press the ON/OFF key to backspace the first 4.lockout value. Then reset the value per step 3.

Use the UP/DOWN keys to change the value of the flashing digit. When the desired value is 5.displayed, press PRGM to select it. Write down the two digit lockout code selected, keeping the written record in a secure location.

Press the ON/OFF key to exit the lockout set screen and return the gauge to the Measurement 6.mode.

Lockout is now enabled. To access gauge registers and display options, the user is required to enter the correct lockout code per the procedure in Accessing Registers with Lockout Enabled.

Accessing Registers with Lockout Enabled Follow this procedure to access gauge registers P0 through P8 when front panel lockout is enabled.

Press the PRGM key while the gauge is in Measurement mode. The lockout screen displays. 1.

Use the UP/DOWN arrow keys to scroll until the first digit of the lockout code is displayed in the 2.LCD. Then press PRGM to select it.

Use the UP/DOWN arrow keys to scroll until the second digit of the lockout code is displayed in the 3.LCD. Then press PRGM to select it. The P0 register indicator appears and you are able to resume the normal procedure for altering register values. Refer to Altering Factory Settings.

Disabling Lockout To disable front panel lockout, reset the lockout code to 00. The following procedure details the process to disable front panel lockout.

While the gauge is in the Measurement mode, press the PRGM key. The lockout screen displays. 1.

Use the UP/DOWN arrow keys to change the value of the flashing digit to match the corresponding 2.digit of the current lockout code. When the desired value is displayed, press PRGM to select it. This returns the screen to the PO registry key.

Note: During any programming operation, if there is no keypad activity for approximately one minute then the current programming operation is aborted and the gauge returns to the Measurement mode.


Press PRGM again to reenter the lockout screen. The current lockout code is displayed. Use the 3.UP/DOWN arrow keys to change the value of the flashing digit to 0. Then press PRGM.

Press the ON/OFF key to exit the P register and return to Measurement mode. 4.

Lockout is now disabled. Users are not required to enter a lockout code to access gauge functions.

Changing the Lockout Code To change the lockout code, first disable it by entering the correct lockout code. Then, upon accessing the PO register, the lockout code can be reset to a new value.

While the gauge is in the Measurement mode, press the PRGM key. The lockout display appears 1.and the first digit flashes.

Use the UP/DOWN arrow keys to scroll until the first digit of the current lockout code is displayed in 2.the LCD. Press PRGM to select it.

Use the UP/DOWN arrow keys to scroll until the second digit of the lockout code is displayed in the 3.LCD. Press PRGM to select it. The lockout screen disappears and the P0 register displays.

Press PRGM again to reenter the lockout display. The current lockout code displays with the first 4.digit of the code flashing.

Use the UP/DOWN arrows to change the display value for the first digit of the new lockout code. 5.Press PRGM to select it. The second digit begins flashing.

Use the UP/DOWN keys to change the display value for the second digit of the new lockout code. 6.Then press PRGM to select it. The lockout screen disappears and the P0 register indicator reappears.

Press the ON/OFF key to exit from the register options. 7.

The lockout feature is now enabled using the new code number.

Calibration Options A primary concern with any digital manometer is calibration. There are numerous NIST-traceable calibrators and dead weight testers on the market, which are viable to check the DVR’s calibration. When choosing a reference, ensure that the accuracy of the calibration unit is superior to the accuracy of the Meriam gauge.

Meriam offers the Meri-Cal auto calibration unit as a calibration tool.

Note: Be sure to write down and keep the new number somewhere safe for recollection. Without it, it’s impossible to access gauge control functions.


Zeroing the Gauge First, zero the gauge. The differential gauge must be zeroed prior to calibrating the DVR. Refer to Adjusting Offset. Check the calibration of the DVR with the following procedure.

Attach the selected measuring device to the Vacuum Manifold inlet port on the front panel with the 1.appropriate tubing. Clamp if necessary.

Turn on the DVR and allow it to regulate vacuum at 300 ± 0.5 mm Hg, or the selected target. 2.

While the DVR is controlling the amount of vacuum in the system, compare the reading on the 3.DVR’s LCD screen to that of your calibrated reference. Ensure both instruments are using the same unit of measure.

Check the display readings several times while the DVR display is relatively steady. 4.

If there is a difference greater than 0.05% of full scale between the instruments (in this case that would be ± 0.1 in H20 or ± 0.19 mm Hg) the differential gauge is out of calibration. Contact CANNON Instrument Company for assistance.

Removing the Differential Gauge from the DVR If the Meriam differential gauge needs repaired or replaced, it may be possible to do so without returning the instrument to CANNON. To remove the gauge from the DVR, follow the instructions outlined below.

Unplug the MAINS power and turn OFF the power to the DVR unit. 1.

For DVR-1000 units, remove the in-house vacuum connection from the port on the rear panel of the 2.DVR.

Allow the system to equilibrate to atmospheric connections. 3.

If necessary, relocate the DVR unit in order to access the inner drawer unit. There must be adequate room to access the rear panel and two feet of space in front of the unit in order to slide the inner drawer unit out.

Use the screwdriver to unscrew the three “captive” set screws on the lower rear panel of the DVR. 4.

Slide the inner drawer straight out by pulling smoothly on the two handles on the front panel. 5.

Place the inner drawer unit on a workbench, facing its rear. To gain access to the rear of the 6.differential gauge, remove the ballast tank.

Partially unscrew the two tank straps screws and flip the screw assembly up. 7.

Pull the tank straps out of the screw assembly. 8.

Note: Be careful not to kink the Poly-Flo® tubing or strain any of the tubing connections during this procedure.


Lift the tank up and out of the straps while the tubing is still connected. Carefully place the tank on 9.top of the inner drawer unit.

Unscrew and remove the two screws holding in the terminal strip on the rear of the differential 10.gauge.

Gently pull the terminal strip, with wiring intact, straight out and place to the side. 11.

Using a 7/16” wrench, remove the Poly-Flo® tubing fitting from the brass elbow on the “low” side of 12.the differential gauge.

Using a hex wrench or driver, remove the two screws holding the gauge rails against the front panel 13.of the drawer unit.

Push the gauge through the opening in the front panel. 14.

Remove the brass elbow from the “low” port and remove the brass filter from the “high” port of the 15.differential gauge to complete the procedure.

Contact CANNON Instrument Company (or your local service representative) for calibration information and to receive a Return Authorization (RA) number. The digital differential gauge must be recalibrated by the manufacturer. Failure to do so will invalidate the certification and may damage the unit.

Refer to the Warranty section for instructions.

Reassembling the DVR Reverse the previous steps to reassemble the unit. Reapply Teflon tape to the threads of the brass elbow before attaching it to the “low” port.

Also, make sure to orient the notched portion of the flange on the mounting rails toward the front of the gauge when replacing the gauge in the DVR housing.

Gauge Display Errors The Meriam gauge has an error/message feature informing the operator of problems with the operation or programming of the gauge. Error codes, messages and recommended procedures are detailed in Table 4.

Table 4: Gauge Display Errors

LCD Explanation Action OP Overpressure warning. The measured

pressure exceeds the full-scale pressure by more than 20%. Sensor is at risk of permanent damage.

Promptly reduce pressure/vacuum feed.

E002 Requested ZERO value is not within 5% of full scale pressure. The value is ignored.

Meriam gauge may require replacing.

E003 Requested SET1 or SET2 points are out of range. The values must be between 0.0 and 120% of the full-scale reading.

Alter the set point values.


LCD Explanation Action E004 Requested SET1 and SET2 values are

identical. This is not an acceptable configuration.

To disable output for one or both set points, adjust the P5 register value per manual instructions.

E005 Requested User Units full-scale range is 0.0. This value is not acceptable. The value must be greater than 0. Alter the full-scale value for User Units.

E006 User entered an incorrect lockout code. If Program mode was then requested, the user is only be able to access register settings in “view-only” mode.

Enter the correct lockout code to obtain access to register values and meter settings.

E010 Full-scale range for engineering units selected is beyond the power scale of the display.

Reset register setting.

E020 Power supply warning. Confirm function of power supply

E030 or greater Hardware or EEProm error. Contact a CANNON service representative

Figure 13: Meriam Display with Vacuum

Setting User Units The Meriam meter provides a register for defining unique User Units for your specific application. The P4 programmable register stores a value corresponding to the full-scale reading for the Engineering Unit of your choice.

Consult Table 5 to determine the full-scale reading for your meter in the available engineering units. Then convert the value from the Engineering Unit to the desired User Unit.

Table 5: User Units

Engineering Unit Value inH2O 200 Psi 7.212 Kg/𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐2 0.5071 Mbar 497.28 Bar 0.4973


Engineering Unit Value CmH20 508 InHg 14.685 MmHg 372.99

After determining the full-scale value for your User Unit, follow the procedure below to input the full-scale value for the User Unit and define the User Unit as the unit of measure for the Meriam gauge. Set the numeric value for the full-scale reading in User Units, and then positioning the decimal point. Select User Units as the desired unit of measure.

Procedure

Ensure the gauge is in the measurement mode, displaying the current vacuum/pressure reading. 1.

Turn the DVR front panel switch to the METER reading. 2.

Press the PRGM key. The meter displays the P0 register indicator. 3.

Use the UP and/or DOWN keys to scroll through the register options until the LCD indicates the P4 4.register.

Press the PRGM key to select the P4 register. The current P4 value then displays. 5.

Use the UP and/or DOWN keys to change the flashing digit to match the desired value for your 6.desired User Unit; then press PRGM to accept the value. The next number starts flashing.

Repeat step 6 until all LCD numbers conform to the desired value and the decimal point is flashing. 7.

Use the UP and/or DOWN keys to change the position of the decimal point until it is correctly 8.positioned.

Press the PRGM key to accept the displayed value and return to the P4 register display. 9.

Press the ON/OFF key to exit the Program mode and return to the Measurement mode. 10.

Press the UP key until all the engineering units in the display are blinking. 11.

Press PRGM. The meter returns to the Measurement mode and no engineering unit displays on the 12.LCD, indicating that User Units are the current unit of measurement.

Note: During any programming operation, if there is no keypad activity for approximately one minute then the current programming operation is aborted and the gauge returns to the Measurement mode.

Note: If lockout is disabled, you will be prompted to enter the lockout code to access the registers.

2139 High Tech Road | State College, PA 16803 | USA800-676-6232 | 814-343-8000 | Fax: 814-353-8007

[email protected] | www.cannoninstrument.com

CANNON INSTRUMENT COMPANY®

CopyrightTrademarksContactContentsSafety PrecautionsNotes/Cautions/Warnings

DVR OverviewDVR FunctionDVR ApplicationDVR-1000 vs. DVR-1500Configuration Options

SpecificationsTubing ConnectionsDVR-1000 ConnectionsConnect to your Application

DVR-1500 ConnectionsVacuum TrapElectrical ConnectionsConnecting Power Cable

DVR OperationDefault SettingsAccessories

Turning ON the DVRMeter Display/Key Control OptionsAdjusting the Flow RateSolenoid RegulatorsRate Adjust KnobRecovery/OvershootUsing the RATE ADJUST KnobLimiting Overshoot

Bleeding Vacuum

Adjusting OffsetAdjust HI/LO Set PointsALAr

Selecting Set Point Values

DVR Cleaning & MaintenanceCleaningMaintenanceTroubleshooting the DVRVacuum System Leak

Altering Factory SettingsChanging the Engineering Unit of MeasureChanging Engineering UnitsAdjusting Control Set PointsAdjustment Procedure: Adjusting the Control Set Points (SET 1 and SET 2)

Selecting Set Point Values

Replacement PartsWarrantyProducts Limited WarrantyReagent and Chemical WarrantyReturning a Product to CANNONRequired InformationHazardous MaterialsShipping Notification

Appendix A – Calibrating the SETRA GaugeCalibration OptionsCalibration ProcedureRemoving the Differential Gauge from the DVR

Reassembling the DVR

Appendix B - Calibrating the Meriam GaugeFront Panel LockoutDetermining Lockout StatusEngaging Front Panel LockoutLockout ProcedureAccessing Registers with Lockout Enabled

Disabling LockoutChanging the Lockout Code

Calibration OptionsZeroing the Gauge

Removing the Differential Gauge from the DVRReassembling the DVR

Gauge Display ErrorsSetting User UnitsProcedure

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Documents

DVR manual.working version1 CANNON® Digital Vacuum Regulator Instruction & Operation Manual Version 1.3 — May, 2009; CANNON® Instrument Company 2139 High Tech Road • State College,